Roller chafe-iron.



PATENTED JUNE 28, 1904.

T. H. BRADY. ROLLER SHAPE IRON. APPLICATION FILED NOV. 2, 1903.

N0 MODEL. I

WzlzzeaLs-es: maa vw. ima, JV. $77117 UNITED STATES Patented June 28,1904.

PATENT OFFICE.

ROLLER CHAFYE-IRON.

SPECIFICATION forming part of Letters Patent No. 763,715, dated June 28,1904. Application filed N0ve1nber2, 1903. Serial No. 179,549. (NomodeldT0 Ml whom, it may concern:

Be it known that I, THoMAs H. BRADY, a' citizen of the United States ofAmerica, resid ing at New Britain, in the county of-Hartford and Stateof Connecticut, have invented certain new and useful Improvements inRoller Chafe-Irons, of which the following is a specification.

The object of the invention is to provide a device of the classspecified having features of novelty and advantage. This is a rollerchafe-iron for wagons and other wheeled vehicles.

Figure 1 is aview, partly fiatwise and partly in section, of a rollerchafe-iron embodying said improvement. Fig. 2 is an end view of thedevice.

In the accompanying drawings the letter (t denotes the frame or body ofthe device, intended to be attached and fastened to the body of thewagon or other vehicle in such a relation that the vehicle-wheel willstrike against the roller of this device rather than come in contactwith the vehicle-body. This frame is made of malleable iron ormaterialof similar nature and is provided with oppositelydisposed lugs a(4 between which the roll is journaled. The lug a is recessed andprovided with a journal-bushing c, of non-rusting metal, which is freeto turn in the socket.

The roll 6 has at one end a journal-pintle having two conicalbearing-surfacesb 6 adjacent to one another, but of differentinclinations, 6 being preferably inclined at an angle of forty-fivedegrees and b at an angle of five degrees. This pintle is adapted to fitwithin a properly-shaped recess in the bushing 0 and rotate therein. Theopposite end of the roll is supported by the screw (Z, threaded throughthe lug a and having a journalpintle formed with two conicalbearing-surfaces d' d of diiferent inclinations, 01 being preferablyinclined at an angle of forty-five degrees and d at an angle of fivedegrees. This journal-pintle supports the opposite end of the roll. Theroll I) and the screw d are of steel, case-hardened. The frame and lugsthereon are not hardened.

In devices of this class I have found that 5 the bearing where thehardened steel works on the soft metal is very liable to rust and.become locked, so that the roll cannot turn, thus destroying the utilityof the device. By inserting at this point a journal-bushing ofnonrusting metal between the hardened steel and the soft'metal thedanger of the parts rusting and locking is overcome. The hardened co.

in its socket and has a properly-shaped recess to receive thejournal-pintle d d of the screw d, on which it turns. This is-theconstruction illustrated in the drawings and which may be preferredbymany.

It will be seen that the roll has in reality two bearings at each end,so that if for any reason one should become locked the other will stillbe ready for use. It will also be seen that the shapes of thejournal-pintles present features of novelty and advantage in that to aconsiderable extent they present particularly favorable bearing-surfacesand provide for taking up any looseness due to wear between the parts.Considering the manner of use of devices of this class the importance ofthis feature will be readily apparent.-

The construction as a whole is one which is inexpensive to manufactureand readily as sembled and taken apart.

I claim as my invention- 1. Inaroller chafe-iron in combination, theframe having oppositely-disposed lugs between which the roll isjournaled; said roll; a journal-bushing of non-rusting metal located ina recess in one of said lugs and free to turn therein; a journal-pintleon the roll cooperating with said bushing; and a screw threaded in theother lug and having a journal-pintle which supports the opposite end ofthe roll, substantially as described.

2. In combination, the frame having two oppositely-disposed lugs, theroller supported between said lugs, the journals for the roll having twoadjacent conical bearing-surfaces of different inclinations, and thebushings of non-rusting metal cooperating with said journals and mountedto turn in their supporting members, substantially as described.

3. In combination, the journal-box having a socket, and a bushing ofnon-rusting metal located therein and free to turn; the roller having ajournal-pintle provided with conical bearing-surfaces of differentinclinations adapted to cooperate with said bushing; a socket in theopposite end of the roller; and the nonrusting bushing located thereinfree to turn; a screw having a j ournal-pintle adapted to enter saidlast-mentioned bushing and cooperate therewith; said pintlehavingconical bearingsurfaces of different inclinations and aninternally-threaded support for said screw.

4. In combination, the frame, the journalboX having a journal-socket,the bushing of non-rusting metal located in the socket and free to turntherein, the roll having a journalpintle at one end cooperating withsaid bushing, said pintle having conical bearing-surfaces of dllferentincllnations, a socket in the ported by the frame and cooperating withthe last-named bushing, substantially as described and for the purposesset forth.

5. In combination the frame, the journalboX having a suitably-shapedjournal-socket, the roll providedwith a journal-pintle having twoconical bearing-surfaces adjacent to one another and of diiferentinclinations adapted to turn in said socket, a screw provided with ajournal-pintle having two conical bearingsurfaces of differentinclinations, and properlyshaped recesses in the end of the roll toreceive said pintle, and an internally-screwthreaded support for saidscrew.

In testimony whereof I aflix my signature in presence of two witnesses.

THOMAS H. BRADY.

Witnesses:

H. E. HART, D. S. KREnVIENDAHL.

